دورية أكاديمية
Potential asteroid discoveries by the ESA Gaia mission. Results from follow-up observations
| العنوان: | Potential asteroid discoveries by the ESA Gaia mission. Results from follow-up observations |
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| المؤلفون: | Carry, B, Thuillot, W, Spoto, F, David, P, Berthier, J, Tanga, P, Mignard, F, Bouquillon, S, Mendez, R, A, Rivet, J.-P, Le van Suu, A, Dell'Oro, A, Fedorets, G, Frezouls, B, Granvik, M, Guiraud, J, Muinonen, K, Panem, C, Pauwels, T, Roux, W, Walmsley, G, Petit, J.-M, Abe, L, Ayvazian, V, Baillie, K, Baransky, A, Bendjoya, P, Dennefeld, M, Desmars, J, Eggl, S, Godunova, V, Hestroffer, D, Inasaridze, R, Kashuba, V, Krugly, Y, N, Molotov, I, E, Robert, V, Simon, A, Sokolov, I, Souami, D, Tarady, V, Taris, F, Troianskyi, V, Vasylenko, V, Vernet, D |
| المساهمون: | Institut de Mécanique Céleste et de Calcul des Ephémérides (IMCCE), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Lille-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Joseph Louis LAGRANGE (LAGRANGE), Université Nice Sophia Antipolis (1965 - 2019) (UNS)-Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de la Côte d'Azur, Université Côte d'Azur (UniCA)-Université Côte d'Azur (UniCA)-Centre National de la Recherche Scientifique (CNRS), Harvard-Smithsonian Center for Astrophysics (CfA), Harvard University-Smithsonian Institution, Systèmes de Référence Temps Espace (SYRTE), Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Universidad de Chile = University of Chile Santiago (UCHILE), Observatoire de Haute-Provence (OHP), Institut Pythéas (OSU PYTHEAS), Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut de Recherche pour le Développement (IRD)-Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), INAF - Osservatorio Astrofisico di Arcetri (OAA), Istituto Nazionale di Astrofisica (INAF), Helsingin yliopisto = Helsingfors universitet = University of Helsinki, Queen's University Belfast (QUB), Centre National d'Études Spatiales Toulouse (CNES), Luleå University of Technology = Luleå Tekniska Universitet (LUT), Finnish Geospatial Research Institute (FGI), Royal Observatory of Belgium = Observatoire Royal de Belgique (ROB), Univers, Théorie, Interfaces, Nanostructures, Atmosphère et environnement, Molécules (UMR 6213) (UTINAM), Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté COMUE (UBFC)-Université Bourgogne Franche-Comté COMUE (UBFC), Taras Shevchenko National University of Kyiv, Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut Polytechnique des Sciences Avancées (IPSA), University of Washington Seattle, National Academy of Sciences of Ukraine = Національна академія наук України = Académie nationale des sciences d'Ukraine (NASU / НАН України), Astronomical observatory of Odessa National University Odessa, Odessa National I.I.Mechnikov University, V.N. Karazin Kharkiv National University (KhNU), Keldysh Institute of Applied Mathematics of RAS, Russian Academy of Sciences Moscow (RAS), Laboratoire d'études spatiales et d'instrumentation en astrophysique = Laboratory of Space Studies and Instrumentation in Astrophysics (LESIA), Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Uniwersytet im. Adama Mickiewicza w Poznaniu = Adam Mickiewicz University in Poznań (UAM) |
| المصدر: | ISSN: 0004-6361. |
| بيانات النشر: | HAL CCSD EDP Sciences |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | [SDU.ASTR.EP]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP] |
| الوصف: | International audience ; Context. Since July 2014, the Gaia mission of the European Space Agency has been surveying the entire sky down to magnitude 20.7 in the visible. In addition to the millions of daily observations of stars, thousands of Solar System Objects (SSOs) are observed. By comparing their positions, as measured by Gaia, to those of known objects, a daily processing pipeline filters known objects from potential discoveries. However, owing to Gaia's specific observing mode, which follows a predetermined scanning law designed for stars as fixed objects on the celestial sphere, potential newly discovered moving objects are characterized by very few observations, acquired over a limited time. Neither can those objects be specifically targeted by Gaia itself after their first detection. This aspect was recognized early in the design of the Gaia data processing. Aims. A daily processing pipeline dedicated to these candidate discoveries was set up to release calls for observations to a network of ground-based telescopes. Their aim is to acquire follow-up astrometry and to characterize these objects. Methods. From the astrometry measured by Gaia, preliminary orbital solutions are determined, allowing to predict the position of these potentially new discovered objects in the sky accounting for the large parallax between Gaia and the Earth (separated by 0.01 au). A specific task within the Gaia Data Processing and Analysis Consortium (DPAC) has been responsible for the distribution of requests for follow-up observations of potential Gaia SSO discoveries. Since late 2016, these calls for observations (nicknamed alerts) are published via a Web interface with a quasi-daily frequency, together with observing guides, freely available to anyone worldwide. Results. Between November 2016 and the end of the first year of the extended mission (July 2020), over 1700 alerts have been published, leading to the successful recovery of more than 200 objects. Among those, six have provisional designation assigned with the ... |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| العلاقة: | info:eu-repo/semantics/altIdentifier/arxiv/2010.02553; hal-03017580; https://hal.science/hal-03017580Test; https://hal.science/hal-03017580/documentTest; https://hal.science/hal-03017580/file/Carry_2020_GaiaFunSSO.pdfTest; ARXIV: 2010.02553; BIBCODE: 2021A&A.648A.96C |
| DOI: | 10.1051/0004-6361/202039579 |
| الإتاحة: | https://doi.org/10.1051/0004-6361/202039579Test https://hal.science/hal-03017580Test https://hal.science/hal-03017580/documentTest https://hal.science/hal-03017580/file/Carry_2020_GaiaFunSSO.pdfTest |
| حقوق: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.73F504C5 |
| قاعدة البيانات: | BASE |
| DOI: | 10.1051/0004-6361/202039579 |
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